Lawn sprinkler



FIG. 1 is a top plan view of a lawn sprinkler showing our new design;

FIG. 2 is a bottom plan view thereof;

FIG. 3 is a side elevation view, the opposite side being a mirror image thereof;

FIG. 4 is a front elevation view thereof;

FIG. 5 is a rear elevation view thereof; and

FIG. 6 is a perspective view thereof.

The broken line showing of a nozzle in FIGS. 1, 2, 3 and 4 is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for a lawn sprinkler, as shown and described. 